I'm pretty sure I've seen that streaming to your PC from Tivo is possible, but I may have been misreading things. I could have sworn that someone had made a plugin for myHTPC. Again, I could be wrong.
Tony, I hate to bring this up, because I don't want to get in a Tivo vs Replay argument, but are you serious that they took out what little control you had over the priorities of your recordings? From what your explanation sounds like, the only way to give a new show higher priority is to delete all your passes and set them up in a new order. That's not correct, is it? Again, I'm not trying to put down the device, just trying to clarify